I'm a beginner, and this is an assignment - I have a form with a menu strip and a listview.I also have a separate class that handles everything.When there is data in the listview, and one row is selected, I need to be able to remove that row when delete is clicked in the menu strip.The code I need to use for the delete is below. Currently it's just sitting in the class, and I don't know how to use it.
Public Sub Delete(ByVal item As employee)
If IndexOf(item) >= 0 Then '"IndexOf" looks for item, returns -1 for not found
DeleteAt(IndexOf(item))
I have a list view control on one of my forms in my program.If i click on a selected item and click on the delete button it gets removed. But i want it so that if i havent got an item selected i click on delete i get a message box telling the user to select an item to delete.
My program takes a checkboxed item and depending on the serial number that is present on the item on the invoice, subtracts one from the amount list I have the following in a listview on a details page which I added with the following code:
Right now it doesn't look like it does anything. I have tried changing my index's on my subitems to 1 and 3 instead of 0 and 2 but i figured because they are subitems that they need to be subitem index 0 and subitem index 2 since there is one item and three subitems to that one item.
Im having some trouble figuring out how I should delete these items. I want it to delete the one I have selected in the listview and delete the corresponding item in the DB. Ive tried various combination's and this is the latest one I have:
[Code]...
So where am I messing up? I keep getting errors no work done but when I close the form2 and open it back up no DB items show up in the Listview. But I close my project, and open it back up and they're back. All while never changing in the DB.
i have a listview with few records im able to delete the records from the listview but after deleting the record the listview is not getting refreshed [Code]
I need help on improving the performance of a program I wrote some time back. This is the main performance issue of the program below. Basically I need to look through some data that is displayed to a user in a list view and determine if the data is a duplicate of any other data in the list. If it is I need to delete the duplicate before my program continues.The below code does the job just fine, however the list view of data has approximately 30,000 rows of data. Hence looping this list 30,000 to the power 30,000 times makes the program very slow. Note subItem(4) in the data is the "unique" identifier that I later discovered was not so unique....
This was a work around function implemented in the code back when I wrote it (not meant to be permanent). I know that listView is not Ideal to store this much data.how to store the data in a more efficient manner or improve the performance of the Search and Delete [code].....
I have an ini File which I use as an "index" of jar files. The Jars are declared in it like: Name of the jar=c:Path So when my application starts, the ini file gets loaded in a list view. I have a delete button, with which I want to delete the jars from the list view and the ini file. It must be possible to delete multi choiced jar references. so I thought to do it with for each, so that every selected item get searched in the ini and deleted. The Error is, that the String (is correct, I tested it with a messagebox) get analysed - Unknown escape sequence R (The error is between the ** **)
My Code: Private Sub jarDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles jarDelete.Click If Me.ListView1.SelectedItems.Count > 0 Then For Each item As ListViewItem In ListView1.SelectedItems ListView1.Items.Remove(item) Dim GanzeZeile As String = ListView1.SelectedItems.ToString [Code] ......
I have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
I have a form with a treeview and a listview. The treeview lists the folders on your system and listview shows the files in the selected folder, similar to windows explorer. I have a delete button for deleting files.
Dim i As Integer For i = 0 To lv1.SelectedItems.Count - 1 Dim csi As CShItem = lv1.SelectedItems(i).Tag
[CODE]...
When deleting multiple files a confirmation message box pops up for each file selected. I would like to have it come up once and ask 'Are you sure you want to send these 'x' files to the recycle bin?' where 'x' is the number of files selected.
I have spent several hours trying to delete a row and insert a row into an Access database using the OLEDBDataadapter and dataSets without any success. I don't get any errors it just doesn't update the datatable. Here is the last version of the code I have been trying to get to work. I have done a lot of searching and have
Data save Private Sub SaveNumDte(ByVal ltoNum As String, ByVal ltoDate As Date) Dim numTotal, x, MaxRows As Integer
i am developing a point of sales system. currently i have my product code scanned and displayed in a listview. lets say that i have 5 product codes displayed in my first listview. By clicking on a button, how can i use these codes to call upon the details (prices, product name, etc.) of the corresponding codes and display in another listview?
i am using Visual Basic 2008 and MsAccess as my database. who have the idea on solving my question. (As my last thread has not been answered at all..
Well I have Flash control and I need to delete it with code.I need to know how to make a new flash control. I know Dim ShoclwaveFlash As New ????. I don't know what to put for ????. I'm using the COM Component for Flash in VB 2008.
I am sucessfully getting pictures and displaying them but having problems deleting them heres everything I am trying to do: frmCapture:Takes pictures from the webcam and stores them in a location with random filenames..User then ends this process by a button which disposes this form and displays the next one below [code]This form then gets all the files in that directory and uses back and forward buttons going through the images in a picture box.When finished the user then hits a close button that displays another form and disposes that one (this new form waits 5 seconds then tries to delete all files in that directory however its getting an access denied because the file is still in use.[code]
i am using vb.net 2008 and sql server 2005 i have read that always use parameteres for adding / deleted but this is very odd.if i delete a set of records using parameters it doesnt delete.i have used
mCmd = "DELETE From TaxStructure WHERE EffDate = @mDt" cmd = New SqlCommand(mCmd, MyConConnection) cmd.Parameters.AddWithValue("@mDt", dtPkEffDate.Value.Date) cmd.ExecuteNonQuery() MyConConnection.Close()
this does not delete the data as it seems the date is not found but if i use this :
mCmd = "DELETE From TaxStructure WHERE EffDate = '" & dtPkEffDate.Value.Date & "'" cmd = New SqlCommand(mCmd, MyConConnection) 'cmd.Parameters.AddWithValue("@mDt", dtPkEffDate.Value.Date) cmd.ExecuteNonQuery() MyConConnection.Close()
this works......now what am i doing wrong in the parameters.its the same sometimes for selecting the records too...somewhere it works somewhere it doesnt.
know this is going to sound weird, but I want to show this program I'm making to a friend of mine and I don't want her to keep the program.... So, is there any way to make the program "commit suicide" during/after closure
I want to let others to delete selected row in the following datagrid view and I have written it like this. Now when I select a row and press the delete button I can remove the selected row but it will not update the database which meant it will not deleting the above row.
I have bound my datagrid view using databinding. Private Sub dgvAllInvoices_UserDeletingRow(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewRowCancelEventArgs) Handles dgvAllInvoices.UserDeletingRow If MessageBox.Show("Do you really want to Delete this Invoice ?", "SD Technology", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.Yes Then [Code] .....
I'm writing a program that uses a webbrowser to update a page and gather its data. But it's reloading the page from the cache. I located the cache and quickly found that it cannot be deleted like normal files.
Now i really only need to delete one file, specifically a javascript file, because that's the only thing i need updated. But deleting the cache is proving to be a bigger problem than i thought, let alone deleting a single item from the cache.
I'm encountering a problem on how to delete a selected row in a datagrid. This error occurs, "Missing the DataColumn 'ID' for the SourceColumn 'ID'."[codde]
I am deleting a row from a row that is currently selected on a datagridview.I am using a Typed dataset and my datagridview is bounded to a binding source.However, I think my technique is not the best, even though it works.
Dim drDelete() As DataRow ' Get the value of the PK from the currently selected row Dim drv As DataRowView = CType(bsAddressBook.Current, DataRowView)
i have 2 textbox's and 1 button i have 1 big textbox that has a buch of number's in it and the number i want to delete is in the top textbox how can i delete number 2 ? from the big textbox ?
I have a basic Table and I can add and save data, but when I try to delete, I het this error:Quote:Update requires a valid DeleteCommand when passed DataRow collection with deleted rows.
Public Class Form6 Private Sub ConverterBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ConverterBindingNavigatorSaveItem.Click
what happens is i have a weekly salary table and once a week an administrator computes the salaries and it will be saved there, i want the delete code to delete the already saved record with the same Emp_ID as what i'm trying to save. my problem is i don't think the code i put deletes the record because it will still tell me that there is already an Emp_ID the same with what i'm trying to save..
so far this is my code..
Dim cnn As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source = C:UsersFlorieDocumentsVisual Studio 2008ProjectsPayroll SystemPayroll Systemobjx86DebugPayroll_MaryRoseAn.accdb") Dim cmd As New OleDbCommand
I'm having an issue trying to pull information from a specific website. I've asked about this once before, but had no luck through searches or responses.In a nut shell, the issue I'm having is trying to pull information from several URLs from a site.When I load the first URL and pull the information, it works just fine. But if I want to pull another from that same site, it acts like it is loading, but doesn't pull the information. In order for me to gather that information, I have to restart the program, but that beats the purpose.So, I wanted to see if the issue was related to cookies or something else the webbrowser control creates when loading a site. If this is the case, I'd like to clear out this information, or at least try it, after each time it pulls the information from the site.
